. Pittsburgh and Allegheny in the centennial year . ead. Consumptuper head. England, . 287 lbs. 140 lbs. Russia, . 10 lbs. 10 lbs. United States, . 84 • 117 Switzerland, . 00 22 France, 40 60 Prussia, . 50 50 Sweden & Norway , 92 30 Germany,Zoll verein,50 50 Belgium, . 136 70 Spain, . . 4^, 5 Austria, . . 12;, 15 The same authority computes that from the ratio of increase in 115 years,during which time it increased seventeen fold, the next century would show ademand requiring an annual make of 140,000,000 tons. The consumption ofiron is so rapidly increasing, that it requires shorter periods f
. Pittsburgh and Allegheny in the centennial year . ead. Consumptuper head. England, . 287 lbs. 140 lbs. Russia, . 10 lbs. 10 lbs. United States, . 84 • 117 Switzerland, . 00 22 France, 40 60 Prussia, . 50 50 Sweden & Norway , 92 30 Germany,Zoll verein,50 50 Belgium, . 136 70 Spain, . . 4^, 5 Austria, . . 12;, 15 The same authority computes that from the ratio of increase in 115 years,during which time it increased seventeen fold, the next century would show ademand requiring an annual make of 140,000,000 tons. The consumption ofiron is so rapidly increasing, that it requires shorter periods for the doubling ofthe production from a given date. In Great Britain, commencing at 1806, it re-quired until 1824, or 18 years, to double the amount consumed at the formerdate. In 1836 it had again doubled, being only twelve years. In 1847, elevenyears, it had doubled again; and in 1855, a period of eight years, it had reached3,500,000 tons, being an increase of 1,500,000 tons in that time, at which rate itwould double in ten
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Keywords: ., bookcentury1800, bookdecade1870, bookidpittsburghal, bookyear1876
